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Finding the Fourth Proportional to 5,781.68, 8,674.02 and 1,621.70

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Solution

The fourth proportional to 5,781.68, 8,674.02 and 1,621.70 is: 2,432.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,781.68 : 8,674.02 = 1,621.70 : x
  2. Step 2: Convert to fraction form
    5,781.68/8,674.02 = 1,621.70/x
  3. Step 3: Cross multiply
    5,781.68x = 8,674.02 × 1,621.70
  4. Step 4: Simplify right side
    5,781.68x = 14,066,658.23
  5. Step 5: Solve for x
    x = 14,066,658.23/5,781.68
  6. Step 6: Final answer
    x = 2,432.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.